Tell me about 'sorghum rice'

I just bought a package of grain in an Asian grocery, labeled 'sorghum rice.' I thought sorghum and rice were different plants, so I'd like to know if this is really one or the other, or a specific species of rice? I searched and found photos that looked just like this, and recipes for Indian dishes like dosa and idli-like puffs. Mine is from China and labeled in Chinese, so I suppose there are Chinese uses too. Could it be cooked like rice, and in what ratios? Suggestions/information wanted! (http://hongdi.en.ecplaza... for the photo)

Thank you all for the information! I do have the flour (lately from an Indian grocery), I have used sorghum molasses, but I had never seen the whole grain before. I'll explore the links and do some experimenting.